<template>
   <div>Son2--{{msh}}</div>
    
</template>

<script>
export default {
    name: 'Son2',
    data(){
        return{
            msh:'default'
        }
    },
    methods:{
        changeMsh(){
            this.msh = 'old data ...'
        }
    }
    


}
</script>

<style>

</style>